Austin-Bergstrom International Airport
Aircraft Accident/Incident Report

Austin, Texas 78719
Wednesday, December 29, 2004 13:30 CST

NTSB Narrative Summary Released at Completion of Accident

During the takeoff roll, both flight attendants observed a haze in the cabin. As the airplane rotated and began to climb, the haze thickened. At approximately 500 feet above ground level (agl), the smoke detector in the rear lavatory sounded, the "smoke toilet" message was displayed in the cockpit, and a strong odor of smoke was present. The captain declared an emergency and returned to the airport. According to a statement provided by the flight attendants, after a safe and uneventful landing, the captain ordered an emergency evacuation utilizing the airplane's four exits. A passenger exited the airplane through a window exit and fractured a bone in her right foot. Company maintenance personnel examined the airplane and "found that an air conditioning pack that had failed," which would have resulted in a haze in the cabin.

NTSB Probable Cause Narrative

The failure of an air conditioning pack, which resulted in a haze filling the cabin. A contributing factor was the failure of the passenger to follow evacuation instructions.

Event Information

Type of Event Accident
Event Date 12/29/2004
Event Day of the Week Wednesday
Time of Event 1330
Event Time Zone Central Standard Time
Event City Austin
Event State TEXAS
Event Country --
Zipcode of the event site 78719
Event Date Year 2004
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 301207N
Event Location Longitude 0974000W
Event Location Airport Austin-Bergstrom International
Event Location Nearest Airport ID AUS
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 542
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1253 Central Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID AUS
Elevation of weather observation facility 542
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 16000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.26
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 59
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 17725
NTSB Notification Source Messa Airlines
NTSB Notification Date Dec 29 2004 12:00AM
NTSB Notification Time 1441
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 8 2005 12:51PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office San Antonio, Texas

Aircraft Involved

Aircraft #1

Aircraft Registration Number N506MJ
NTSB Number DFW05LA047
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? No
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Bombardier
Aircraft Model CL-600-2C10
Aircraft Series Identifier --
Aircraft Serial Number 10073
Certified Max Gross Weight 72500
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 70
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Wells Fargo Bank NW
Aircraft Owner Street Address 299 S Main St FL12
Aircraft Owner City Salt Lake City
Aircraft Owner State UT
Aircraft Owner Country USA
Aircraft Owner Zipcode 84111
Operator is an individual? No
Operator Name Mesa Airlines, Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 410 N 44th Street Gateway 3 Building Suite 700
Operator City Phoenix
Operator State AZ
Operator Country USA
Operator Zip code 85008
Operator Code MASA
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code AUS
Departure City Austin
Departure State TX
Departure Country USA
Departure Time 1318
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code IAD
Destination City Washington
Destination State DC
Destination Country USA
Specific Phase of Flight Other
Report sent to ICAO? No
Evacuation occurred Yes
Date of most recent change to record Mar 28 2005 11:49AM
User who most recently changed record CASH
Since inspection or accident --
Event Location Runway Number and Location 17L
Runway Length 9000
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --